CN115753763B - Variable-angle free water outlet test device and method without emission gas interference - Google Patents
Variable-angle free water outlet test device and method without emission gas interference Download PDFInfo
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- CN115753763B CN115753763B CN202211384939.3A CN202211384939A CN115753763B CN 115753763 B CN115753763 B CN 115753763B CN 202211384939 A CN202211384939 A CN 202211384939A CN 115753763 B CN115753763 B CN 115753763B
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- 238000007789 sealing Methods 0.000 claims abstract description 74
- 125000006850 spacer group Chemical group 0.000 claims abstract description 74
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Abstract
The invention provides a variable-angle free water outlet test device and method without emission gas interference, and belongs to the technical field of ocean engineering experiments. The problems that a conventional underwater launching experimental device is only in a vertical or oblique single launching mode, watertight and potential safety hazards of the launching device installed in a water tank and the movement posture of a water outlet barrel of a navigation body are disturbed by launching gas are solved. The device comprises a bracket, a water tank, a rotating mechanism, a channel switching mechanism and a launching mechanism, wherein the precise adjustment of the water outlet angle is realized through the rotating mechanism, a gas filtering and sealing water spacer of the channel switching mechanism breaks at a preset position when a navigation body is impacted, the remaining gas filtering and sealing water spacer is abutted against the side wall of the navigation body which ascends, the launching gas is prevented from entering the water tank under the action of the combined water pressure, the launching gas is expanded outwards at a plurality of air dispersing holes at the head end of a gun barrel, and the launching gas is prevented from entering the water tank to influence the water outlet posture and the cavitation flow field of the navigation body; the invention is suitable for multi-angle free water outlet tests of the navigation body without gas interference.
Description
Technical Field
The invention belongs to the technical field of ocean engineering experiments, and particularly relates to a variable-angle free water outlet test device and method without emission gas interference.
Background
With the rapid development of modern ships and the frequent disputes of sea rights in various areas, underwater weapons are receiving more and more importance, and the water outlet process is involved in both submerged weapons and cross-medium weapons. The water outlet process has strong nonlinearity, can influence factors too much, and the navigation body is partially or wholly wrapped by cavitation bubbles, the pulsation of the cavitation bubbles and the influence of natural sea conditions, so that the water outlet process is subjected to the hydrodynamic force of severe change. Various factors influence whether the navigation body can pass through a water layer of tens of meters and keep good water outlet postures, and the success or failure of water outlet of the navigation body is directly determined.
The current experimental device for underwater launching mostly adopts a vertical launching mode or an oblique launching mode, the angle is not easy to freely change, the pneumatic launching device is mostly arranged in a water tank, and the movement posture and the cavitation form of a navigation body after being discharged from a barrel are influenced by the cavitation pulsation of launching gas. The water outlet problem has strong unsteadiness and strong nonlinearity, and adverse effects of experimental conditions on the movement of a navigation body are reduced as much as possible, so that development of a water outlet experimental device which is more suitable for reality is urgently needed.
Disclosure of Invention
Therefore, the invention aims to provide a variable-angle free water outlet test device without emission gas interference, so as to solve the problems that a conventional underwater emission test device is only in a vertical or oblique single emission mode, a pneumatic emission device is installed in a water tank for watertight and safety hidden trouble, the movement posture of a water outlet barrel of a navigation body, the cavitation of the water outlet barrel is interfered by emission gas and the like.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
The variable-angle free water outlet test device without the interference of emitted gas comprises a bracket, a water tank, a rotating mechanism, a channel switch mechanism and an emitting mechanism, wherein the water tank and the rotating mechanism are both arranged on the bracket, the bottom of the water tank is hinged with the bracket, the channel switch mechanism is arranged at the bottom of the water tank, the emitting mechanism is arranged at the bottom of the channel switch mechanism, and the channel switch and the emitting mechanism are both arranged outside the water tank;
The rotating mechanism comprises an electric push rod and an angle measuring instrument, the output end of the electric push rod is hinged with the side face of the water tank, the tail end of the electric push rod is hinged with the bracket, the electric push rod can drive the water tank, the channel switching mechanism and the transmitting mechanism to synchronously rotate, and the angle measuring instrument is arranged on the water tank;
The channel switch mechanism comprises a ball valve, a plug flange and a plug assembly, wherein the upper end of the ball valve is fixedly connected to the bottom plate of the water tank through a flange, the lower end of the ball valve is connected with the plug flange, the plug flange is connected with the barrel head flange, and the plug assembly is arranged between the plug flange and the barrel head flange;
The emission mechanism comprises a gun barrel, an electromagnetic valve and an air chamber, wherein a gun barrel head flange is connected with the upper end of the gun barrel, a gun barrel tail flange is arranged at the lower end of the gun barrel, the gun barrel tail flange is connected with the electromagnetic valve through a flange plate bolt, the lower end of the electromagnetic valve is connected with the air chamber, the electromagnetic valve is used for controlling emission gas in the air chamber to be released, a navigation body is arranged in the gun barrel, and a plurality of air dispersing holes for overflowing the emission gas are formed in the position, close to the upper end, of the gun barrel;
Initially, the plug assembly seals the passageway between the plug flange and the barrel head flange; during the experiment, the navigation body breaks the plug assembly and enters the water tank.
Still further, the plug assembly includes clamp plate, ring rubber circle, gas filtration sealing water spacer and plug board, respectively sets up a ring rubber circle below the middle through-hole of clamp plate, and clamp plate and the ring rubber circle on it compress tightly the gas filtration sealing water spacer in the circular draw-in groove on the plug board jointly, makes the plug assembly press close to the plug flange through installing on four roof screws on barrel head flange on screwing up, upwards closes to the plug flange along with the plug board, and the ring rubber circle is extrudeed, with gas filtration sealing water spacer combined action, realizes sealedly.
Furthermore, the air filtering and water sealing spacer is a circular plate made of thickened tinfoil materials, the diameter of the circular plate is equal to that of the circular clamping groove on the plug board, an easy-tearing line opposite to the navigation body is arranged at the center of the air filtering and water sealing spacer, and the air filtering and water sealing spacer is broken at the easy-tearing line when the navigation body impacts the air filtering and water sealing spacer.
Furthermore, when the navigation body passes through the air filtering water sealing spacer, the residual air filtering water sealing spacer is tightly attached to the side wall of the navigation body which ascends, and under the combined action of the water pressure and the navigation body, the emission gas is prevented from entering the water tank.
Furthermore, the center position of the air filtering water sealing spacer is provided with an easy-tearing line with the same diameter as the navigation body.
Furthermore, the channel switching mechanism and the transmitting mechanism are fixedly connected below the water tank sequentially through the flange plate, a navigation body channel formed by the channel switching mechanism and the transmitting mechanism is always perpendicular to the bottom plate of the water tank, and the accurate adjustment of the water outlet angle of the navigation body is realized through the control of the angle measuring instrument and the electric push rod of the rotating mechanism.
Furthermore, two electric push rods are arranged, the output end of each electric push rod is hinged with the water tank through a first hinge, and the tail end of each electric push rod is hinged with the cross beam of the bracket through a second hinge.
Furthermore, one side of the bottom of the water tank is connected with the bracket through a third hinge, the motor inside the electric push rod drives the push rod to stretch out and draw back so as to realize the relative rotation between the water tank and the bracket, and the other side of the bottom of the water tank is welded with a strip square pipe for transmitting the weight of the water tank to the bracket.
Furthermore, the front and rear surfaces of the water tank are made of acrylic plates which are convenient for observing the state of the navigation body in the water tank.
The invention provides an experimental method of a variable-angle free water outlet test device without emission gas interference, which comprises the following steps:
Before the experiment:
Attaching a gas filtering and water sealing spacer to a circular clamping groove of a plug board, clamping the gas filtering and water sealing spacer together by a pressing plate and the plug board to form a plug assembly together, and inserting the plug assembly into a gap reserved between a plug flange and a barrel head flange; the air filtering water sealing spacer is tightly attached to the plug board by the ring rubber ring on the pressing plate through screwing up the top plate screw, and sealing is realized together with the ring rubber ring; manually opening the ball valve to fill the channel between the air filtering water sealing spacer and the ball valve with water; inflating the air chamber through a high-pressure air source, and inflating to a corresponding pressure according to a preset speed;
according to the required water outlet experimental angle requirement, the water tank is driven to rotate around the third hinge by the expansion and contraction of the electric push rod until the experimental requirement is met;
During experiments, the emission of the navigation body is controlled through the electromagnetic valve switch; after the emission, the navigation body penetrates through the air filtering water sealing spacer to enter the water tank to make water movement; because the air filtering water sealing spacer is damaged, water starts to leak, and the ball valve is manually closed in time, so that further leakage of water is prevented; and replacing the air filtering water sealing spacer after each experiment, and repeating the steps to perform the next experiment.
Compared with the prior art, the variable-angle free water outlet test device without emission gas interference has the beneficial effects that:
(1) The variable-angle free water outlet test device without the interference of the emission gas is not only suitable for vertical water outlet tests, but also can be used for adjusting the water outlet angle by rotating the water tank through the electric push rod when the working condition is needed, so that the working condition requirement is met, and the emission device is positioned below the water tank.
(2) The invention creates the variable-angle free water outlet test device without the interference of the emission gas, and through the specially designed air filtering water sealing spacer, the air filtering water sealing spacer breaks at a preset position when a navigation body is impacted, the residual air filtering water sealing spacer is abutted against the side wall of the navigation body which ascends, the emission gas is prevented from entering a water tank under the action of combined water pressure, in addition, the head end of a gun barrel is provided with a plurality of air dispersing holes, the emission gas expands outwards and overflows at the air dispersing holes, and the effect that the emission gas enters the water tank to influence the water outlet posture and cavitation flow field of the navigation body is further prevented.
(3) The variable-angle free water outlet test device without the interference of the emitted gas can realize the small-scale water outlet test research of different angles and different speeds, and reduce adverse influence factors of the water outlet test of a navigation body.
(4) The variable-angle free water outlet test device without the interference of emitted gas has the advantages that the self structure and the installation between the device and a test model are simple, all the components can be processed separately and then are connected with each other through the flange and the hinge, all the components are mutually independent, and the device is safe and reliable and can be used in a replaceable manner.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute an undue limitation on the invention. In the drawings:
FIG. 1 is a schematic perspective view of a variable angle free water outlet test device without interference of emitted gas according to an embodiment of the present invention;
FIG. 2 is a front view of a variable angle free water outlet test device without interference of emitted gas according to an embodiment of the present invention;
FIG. 3 is a side view of a variable angle free water outlet test apparatus without interference of emitted gas according to an inventive embodiment of the present invention;
FIG. 4 is a schematic view of a channel switch mechanism of a variable angle free water outlet test device without interference of emitted gas according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a channel switch mechanism of a variable angle free water outlet test device without interference of emitted gas according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view of a gun tube of a variable angle free water outlet test device without interference of emitted gas according to an embodiment of the invention.
Reference numerals illustrate:
1. A water tank; 2. a bracket; 3. a ball valve; 4. a plug flange; 5. a plug board; 6. a barrel head flange; 7. a top plate screw; 8. a barrel; 9. an electromagnetic valve; 10. a gas chamber; 11. an electric push rod; 12. a first hinge; 13. a second hinge; 14. a third hinge; 15. a circular ring rubber ring; 16. a barrel tail flange; 17. a navigation body; 18. air dispersing holes; 19. an angle measuring instrument; 20. a pressing plate; 21. air filtering and water sealing spacer.
Detailed Description
1-6, The variable-angle free water outlet test device without the interference of emitted gas comprises a bracket 2, a water tank 1, a rotating mechanism, a channel switch mechanism and an emitting mechanism, wherein the water tank 1 and the rotating mechanism are both arranged on the bracket 2, the bottom of the water tank 1 is hinged with the bracket 2, the channel switch mechanism is arranged at the bottom of the water tank 1, the emitting mechanism is arranged at the bottom of the channel switch mechanism, and the channel switch and the emitting mechanism are both arranged outside the water tank 1;
The rotating mechanism comprises an electric push rod 11 and an angle measuring instrument 19, the output end of the electric push rod 11 is hinged with the side face of the water tank 1, the tail end of the electric push rod 11 is hinged with the bracket 2, the electric push rod 11 can drive the water tank 1, the channel switching mechanism and the transmitting mechanism to synchronously rotate, and the angle measuring instrument 19 is arranged on the water tank 1;
The channel switch mechanism comprises a ball valve 3, a plug flange 4 and a plug assembly, wherein the upper end of the ball valve 3 is fixedly connected to the bottom plate of the water tank 1 through a flange, and the ball valve 3 can be arranged at the central position of the bottom plate of the water tank 1 through the flange; the lower end of the ball valve 3 is connected with a plug flange 4, the plug flange 4 is connected with a barrel head flange 6, and a plug assembly is arranged between the plug flange 4 and the barrel head flange 6;
The emission mechanism comprises a gun barrel 8, an electromagnetic valve 9 and an air chamber 10, wherein a gun barrel head flange 6 is connected with the upper end of the gun barrel 8, a gun barrel tail flange 16 is arranged at the lower end of the gun barrel 8, the gun barrel tail flange 16 is connected with the electromagnetic valve 9 through a flange plate bolt, the lower end of the electromagnetic valve 9 is connected with the air chamber 10, the electromagnetic valve 9 is used for controlling emission gas in the air chamber 10 to be released, a navigation body 17 is arranged in the gun barrel 8, and a plurality of air dispersing holes 18 for overflowing the emission gas are formed at positions, close to the upper end, of the gun barrel 8;
The plug assembly comprises a pressing plate 20, a circular ring rubber ring 15, a gas filtering and water sealing spacer 21 and a plug board 5, wherein the circular ring rubber ring 15 is respectively arranged on the upper surface and the lower surface of a middle through hole of the pressing plate 20, the pressing plate 20 and the circular ring rubber ring 15 on the pressing plate compress the gas filtering and water sealing spacer 21 in a circular clamping groove on the plug board 5 together, the plug assembly is close to the plug flange 4 by screwing up four top plate screws 7 arranged on a barrel head flange 6, and the circular ring rubber ring 15 is extruded along with the upward closing of the plug board 5 to the plug flange 4 to realize sealing together with the gas filtering and water sealing spacer 21;
The method comprises the steps that at first, a plug assembly seals a channel between a plug flange 4 and a barrel head flange 6, a circular clamping groove is formed in a plug plate 5, a gas filtering and water sealing spacer 21 is covered at the circular clamping groove, the gas filtering and water sealing spacer 21 shields the communication between the head end of a barrel 8 and the bottom of a water tank 1, in the experiment, a navigation body 17 breaks through the plug assembly to enter the water tank 1, high-pressure emission gas enters the atmosphere through a gas dispersing hole 18 and acts together with the gas filtering and water sealing spacer 21, so that the phenomenon that excessive emission gas enters the water tank to form pulsation bubbles to influence the movement of the navigation body 17 is avoided;
The launching mechanism is positioned below the water tank, the outside of the water tank is free to supplement and release launching gas, preparation work such as installation of a navigation body is carried out, and the launching gas is freely diffused into the atmosphere, so that the water tightness problem and the operation safety problem are solved. .
The air filtering water seal spacer 21 is a circular sheet made of thickened tinfoil materials, the diameter of the circular sheet is equal to that of a circular clamping groove on the plug board 5, an easy-tearing line opposite to the navigation body 17 is arranged at the central position of the air filtering water seal spacer 21, an easy-tearing line equal to the diameter of the navigation body is arranged at the central position of the air filtering water seal spacer 21, when the navigation body 17 impacts the air filtering water seal spacer 21, the air filtering water seal spacer 21 is broken at the easy-tearing line, the air filtering water seal spacer is broken at the preset position when the navigation body impacts, the rest air filtering water seal spacer abuts against the side wall of the navigation body which is upward, and the emission gas is prevented from entering the water tank 1 under the action of combined water pressure.
When the navigation body 17 passes through the air filtering water sealing spacer 21, the remaining air filtering water sealing spacer 21 is tightly attached to the side wall of the navigation body 17 which ascends, under the combined action of the water pressure and the navigation body 17, the emission gas is prevented from entering the water tank 1, and adverse effects of the emission gas on the water outlet posture and the water outlet cavitation of the navigation body 17 are avoided.
The channel switching mechanism and the launching mechanism are fixedly connected below the water tank 1 through a flange plate in sequence, a navigation body channel formed by the channel switching mechanism and the launching mechanism is always vertical to the bottom plate of the water tank 1, and the accurate adjustment of the water outlet angle of the navigation body 17 is realized through the control of the angle measuring instrument 19 and the electric push rod 11 of the rotating mechanism; the electric push rod can output stable output force, the output force is rapid, the control precision is high, and the rotation angle of the water tank 1 can be controlled well; the water tank 1 can be freely rotated and adjusted within a range of 60 degrees under the action of the electric push rod 11; the angle measuring instrument 19 is a digital display angle measuring instrument, and can display the rotation angle of the water tank 1.
The number of the electric push rods 11 is two, the output end of each electric push rod is hinged with the water tank 1 through a first hinge 12, and the tail end of each electric push rod is hinged with the cross beam of the bracket 2 through a second hinge 13. One side of the bottom of the water tank 1 is connected with the support 2 through a third hinge 14, the motor inside the electric push rod drives the push rod to stretch out and draw back, so that relative rotation between the water tank 1 and the support 2 is achieved, the electric push rod is controlled to stretch out and draw back through an electric switch, angle adjustment is achieved, and a rectangular square tube is welded on the other side of the bottom of the water tank 1 and used for transmitting the weight of the water tank 1 to the support 2.
The front and back sides of the water tank 1 are respectively provided with an acrylic plate which is convenient for observing the state of the navigation body 17 in the water tank 1, and the front and back sides of the water tank 1 are respectively provided with a large-area acrylic plate which is convenient for shooting and polishing.
The support is used as a total support structure of the device, is respectively hinged with the bottom of the water tank and the rotating mechanism, the output end of the rotating mechanism is hinged with the side wall of the water tank, the channel switch mechanism and the launching mechanism are sequentially and fixedly connected to the bottom of the water tank, and the navigation body is arranged in the barrel of the launching mechanism to form the whole layout of the device.
The channel switching mechanism comprises a ball valve, a plug flange, a pressing plate, a rubber ring, a gas filtering and sealing spacer, a plug plate, a top plate screw and a barrel head flange, the rubber ring between the plug flange and the plug plate and the gas filtering and sealing spacer are screwed on through the top plate screw to realize sealing of water, a drawhole array equal to the diameter of a navigation body is arranged in the middle of the gas filtering and sealing spacer, the gas filtering and sealing spacer is broken at the preset position when the navigation body is impacted, the remaining gas filtering and sealing spacer is abutted to the side wall of the navigation body which is on the upper side, the emission gas is prevented from entering the water tank under the action of combined water pressure, a plurality of air dispersing holes are formed at the head end of the barrel, the emission gas is outwards expanded and overflowed at the position, and the emission gas is further prevented from entering the water tank to influence the water outlet gesture and cavitation navigation body. The launching mechanism is positioned below the water tank, so that the supplementation and release of launching gas in water are avoided, the installation of a navigation body in water is avoided, the launching gas is freely diffused into the atmosphere, and the water tightness problem and the operation safety problem are solved.
The channel switch mechanism and the emission mechanism are fixedly connected below the water tank in sequence, a navigation body channel formed by the channel switch mechanism and the emission mechanism is always perpendicular to the bottom plate of the water tank, and the accurate adjustment of the water outlet angle is realized through the automatic control of the angle measuring instrument and the electric push rod of the rotating mechanism.
The application also provides an experimental method of the variable-angle free water outlet test device without emission gas interference, which specifically comprises the following steps:
Before the experiment:
Attaching a gas filtering and water sealing spacer 21 to a circular clamping groove of the plug board 5, clamping the gas filtering and water sealing spacer 21 by the pressing plate 20 and the plug board 5 together to form a plug assembly, and inserting the plug assembly into a gap reserved between the plug flange 4 and the barrel head flange 6; the top plate screw 7 is screwed up to press the annular rubber ring 15 on the pressing plate 20 to tightly attach the air filtering water sealing spacer 21 to the plug plate 5, so that the air filtering water sealing spacer and the annular rubber ring 15 are sealed together; manually opening the ball valve 3 to fill the channel between the air filtering water sealing spacer 21 and the ball valve 3 with water; inflating the air chamber 10 by a high-pressure air source to a corresponding pressure according to a preset speed;
According to the required water outlet experimental angle requirement, the water tank 1 is driven to rotate around the third hinge 14 by the extension and contraction of the electric push rod 11 until the experimental requirement is met;
During experiments, the electromagnetic valve 9 is used for controlling the emission of the navigation body 17; after the launching, the navigation body 17 penetrates through the air filtering water sealing spacer 21 to enter the water tank 1 to perform water outlet movement; because the air filtering water sealing spacer 21 is damaged, water starts to leak, and the ball valve 3 is manually closed in time, so that further leakage of water is prevented; the air filter water sealing spacer 21 is replaced again after each experiment, and the next experiment is performed by repeating the steps.
The air filtering and water sealing spacer 21 is inserted into the plug board 5, the pressing plate 20 is covered, the air filtering and water sealing spacer is compacted through the top plate screw 7, so that the sealing of water is realized, when the navigation body 17 penetrates through the air filtering and water sealing spacer, the air filtering and water sealing spacer 21 breaks at a preset position, and the rest part clings to the side wall of the navigation body and acts together with water pressure, so that the emitted gas is prevented from entering the water tank; the three sides of barrel head (head end) trompil for the emission gas discharges, has further reduced emission gas and has got into the water tank and influence the navigation body motion. The relative positions of the water tank 1, the channel switch mechanism and the emission mechanism are fixed, when the water tank 1 is rotated by the electric push rod 11, the emission mechanism rotates along with the water tank, and the gun barrel is always vertical to the bottom of the water tank.
The water tank is connected with the electric push rod, so that the water outlet angle can be freely changed according to the requirement; the emission mode adopts a pneumatic emission device, so that the water outlet speed is high; the emission mechanism is positioned below the water tank, and the head of the gun barrel is provided with a gas leakage hole, so that the emission gas is reduced from entering the water tank, and the influence of the emission gas on the movement of a navigation body is reduced; the water in the water tank is blocked by a plug system between the gun barrel head and the ball valve at the bottom of the water tank, and the navigation body can freely pass through the water tank. The experimental device has low cost and convenient operation, and can fully meet the requirements of water outlet experiments.
According to the application, the pneumatic launching device is adopted, the navigation body is accelerated preliminarily under the pushing of high-pressure gas, a large amount of launching gas can move upwards along with the navigation body, when the launching gas moves to the head end of the gun barrel, the reserved air leakage hole can effectively leak the launching gas, the acceleration of the navigation body is basically completed, the pressure of the launching gas has little influence on the further acceleration of the navigation body, but the pulsation of huge bubbles formed after entering the water tank greatly influences the water outlet posture of the navigation body, and when the navigation body 17 penetrates through the air filtering water sealing spacer, the air filtering water sealing spacer 21 breaks at a preset position, the rest part clings to the side wall of the navigation body and acts together with water pressure, the launching gas is further prevented from entering the water tank, the influence of the launching gas on experiments is effectively reduced, and the reliability of the experiments is further ensured.
Claims (7)
1. A variable-angle free water outlet test device without emission gas interference is characterized in that: the device comprises a bracket (2), a water tank (1), a rotating mechanism, a channel switch mechanism and a transmitting mechanism, wherein the water tank (1) and the rotating mechanism are both arranged on the bracket (2), the bottom of the water tank (1) is hinged with the bracket (2), the channel switch mechanism is arranged at the bottom of the water tank (1), the transmitting mechanism is arranged at the bottom of the channel switch mechanism, and the channel switch and the transmitting mechanism are both arranged outside the water tank (1);
The rotating mechanism comprises an electric push rod (11) and an angle measuring instrument (19), the output end of the electric push rod (11) is hinged with the side face of the water tank (1), the tail end of the electric push rod (11) is hinged with the bracket (2), the electric push rod (11) can drive the water tank (1), the channel switching mechanism and the transmitting mechanism to synchronously rotate, and the angle measuring instrument (19) is arranged on the water tank (1);
the channel switching mechanism comprises a ball valve (3), a plug flange (4) and a plug assembly, wherein the upper end of the ball valve (3) is fixedly connected to a bottom plate of the water tank (1) through a flange, the lower end of the ball valve (3) is connected with the plug flange (4), the plug flange (4) is connected with a barrel head flange (6), and the plug assembly is arranged between the plug flange (4) and the barrel head flange (6);
The emission mechanism comprises a gun barrel (8), an electromagnetic valve (9) and an air chamber (10), wherein a gun barrel head flange (6) is connected with the upper end of the gun barrel (8), a gun barrel tail flange (16) is arranged at the lower end of the gun barrel (8), the gun barrel tail flange (16) is connected with the electromagnetic valve (9) through a flange plate bolt, the lower end of the electromagnetic valve (9) is connected with the air chamber (10), the electromagnetic valve (9) is used for controlling the release of emission gas in the air chamber (10), a navigation body (17) is arranged in the gun barrel (8), and a plurality of air dispersing holes (18) for overflowing the emission gas are formed in the position, close to the upper end, of the gun barrel (8);
Initially, the plug assembly seals the passageway between the plug flange (4) and the barrel head flange (6); during experiments, the navigation body (17) breaks through the plug assembly and enters the water tank (1);
The plug assembly comprises a pressing plate (20), a circular ring rubber ring (15), a gas filtering and water sealing spacer (21) and a plug board (5), wherein the circular ring rubber rings (15) are respectively arranged on the upper surface and the lower surface of a middle through hole of the pressing plate (20), the pressing plate (20) and the circular ring rubber ring (15) on the pressing plate jointly compress the gas filtering and water sealing spacer (21) in a circular clamping groove on the plug board (5), the plug assembly is close to the plug flange (4) by screwing four top plate screws (7) arranged on a barrel head flange (6), and the circular ring rubber ring (15) is extruded along with the plug board (5) upwards close to the plug flange (4) to realize sealing under the coaction with the gas filtering and water sealing spacer (21);
The air filtering water sealing spacer (21) is a circular sheet made of thickened tinfoil material, the diameter of the circular sheet is equal to that of a circular clamping groove on the plug board (5), an easy-tearing line opposite to the navigation body (17) is arranged at the center of the air filtering water sealing spacer (21), and when the navigation body (17) impacts the air filtering water sealing spacer (21), the air filtering water sealing spacer (21) is broken at the easy-tearing line;
When the navigation body (17) passes through the air filtering water sealing spacer (21), the remaining air filtering water sealing spacer (21) is tightly attached to the side wall of the ascending navigation body (17), and under the combined action of water pressure and the navigation body (17), the emission gas is prevented from entering the water tank (1).
2. The variable angle free water outlet test device without interference of emitted gas according to claim 1, wherein: the center of the air filtering water sealing spacer (21) is provided with an easy-tearing line with the same diameter as the navigation body.
3. The variable angle free water outlet test device without interference of emitted gas according to claim 1, wherein: the channel switching mechanism and the launching mechanism are fixedly connected below the water tank (1) through the flange plate in sequence, a navigation body channel formed by the channel switching mechanism and the launching mechanism is always perpendicular to the bottom plate of the water tank (1), and the accurate adjustment of the water outlet angle of the navigation body (17) is realized through the control of the angle measuring instrument (19) and the electric push rod (11) of the rotating mechanism.
4. The variable angle free water outlet test device without interference of emitted gas according to claim 1, wherein: the two electric push rods (11) are arranged, the output end of each electric push rod is hinged with the water tank (1) through a first hinge (12), and the tail end of each electric push rod is hinged with the cross beam of the bracket (2) through a second hinge (13).
5. The variable angle free water outlet test device without interference of emitted gas according to claim 1, wherein: one side of the bottom of the water tank (1) is connected with the support (2) through a third hinge (14), the expansion and contraction of the push rod is driven by an electric push rod motor to realize the relative rotation between the water tank (1) and the support (2), and a strip square tube is welded on the other side of the bottom of the water tank (1) and used for transmitting the weight of the water tank (1) to the support (2).
6. The variable angle free water outlet test device without interference of emitted gas according to claim 1, wherein: the front and rear sides of the water tank (1) are made of acrylic plates which are convenient for observing the state of the navigation body (17) in the water tank (1).
7. The experimental method of the variable angle free water outlet experimental device without interference of emitted gas according to any one of claims 1 to 6, wherein the experimental method comprises the following steps: the method specifically comprises the following steps:
Before the experiment:
Attaching a gas filtering and water sealing spacer (21) to a circular clamping groove of the plug board (5), clamping the gas filtering and water sealing spacer (21) by the pressing plate (20) and the plug board (5) together to form a plug assembly, and inserting the plug assembly into a reserved gap between the plug flange (4) and the barrel head flange (6); the sealing device is characterized in that a top plate screw (7) is screwed up to press a circular ring rubber ring (15) on a pressing plate (20) to tightly attach a gas filtering and water sealing spacer (21) to a plug board (5), so that sealing is realized together with the circular ring rubber ring (15); manually opening the ball valve (3) to fill the channel between the air filtering water sealing spacer (21) and the ball valve (3) with water; inflating the air chamber (10) by a high-pressure air source, and inflating to a corresponding pressure according to a preset speed;
According to the required water outlet experimental angle requirement, the water tank (1) is driven to rotate around the third hinge (14) through the expansion and contraction of the electric push rod (11) until the experimental requirement is met;
During experiments, the emission of the navigation body (17) is controlled by switching the electromagnetic valve (9); after the emission, the navigation body (17) penetrates through the air filtering water sealing spacer (21) to enter the water tank (1) to make water movement; because the air filtering water sealing spacer (21) is damaged, water starts to leak, and the ball valve (3) is manually closed in time, so that further leakage of water is prevented; the air filtering water sealing spacer (21) is replaced after each experiment, and the steps are repeated for the next round of experiment.
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